Patent GB-769675-A (GB)
Title: Improvements in or relating to towel dispensing cabinets
IPC: G07F17/18
Filed: 1953-12-02
Abstract: 769,675. Towel dispensers. AMERICAN LINEN SUPPLY CO. Dec. 2, 1953 [Nov. 27, 1953], No. 33474/53. Class 18. In a towel dispenser of the type including a measuring roll for dispensing a measured amount of towelling, a take-up roll for used towelling, and a drive roll therefor, means for simultaneously rotating said measuring roll and said take-up drive roll during each dispensing operation and means for terminating each dispensing operation and for introducing a time delay before a new dispensing operation may be performed, the operation terminating means includes means carried by the measuring roll and engageable with a stop mechanism actuated by the take-up drive roll in response to every revolution thereof for stopping said measuring roll in a different position of rotation for each successive dispensing, operation. In this way undue wear on the granular surface of the measuring roll is prevented. As shown the apparatus is contained in a cabinet having a hinged upper door 18, provided with a lock 18a, which may be maintained in either the open or closed position by a spring 20 co-operating with a projection 22, and a lower door 23, pivotally mounted on brackets 24, which forms a receptacle for the supply roll 133 of towelling. A spring 37 maintains the door 23 in either the open or closed position and the two doors cooperate to form a dispensing slot 28. The rear portion 32 of the lower cover 23, together with members 43 and 46 attached to the rear wall of the cabinet, form smoothing plates over which the used towelling is drawn before reaching the take-up roll. The dispensing mechanism is removably supported on a pair of brackets 135, and comprises a measuring roll 65 driving a take-up drive roll 66, of larger diameter than the roll 65, through a chain 69, the roll 65 making more than one revolution for each revolution of the roll 66. A shield 59 prevents clean towelling from coming into contact with the rolls. A pinch roll 115 co-operates with the roll 65 and is supported by bearings 117 which are slidable in slots formed by guide plates 118, 119, removal of cotter pins 120 enabling the pinch roll to be removed. The take-up roll 123 is carried on the upper surface of the roll 66 the trunnions 124 being supported in guides 125, 128, which are widely spaced at their lower ends, to allow movement of the roll 123 over the surface of the roll 66 whereby the amount of towelling in the loop 137 remains substantially constant. The stop mechanism comprises a pivoted lever 73 having a pawl 74 which cooperates with one of five stop positions on a member 70 carried by the roll 65, when a member 71 carried by the roll 66 engages the cam surface 75. A pair of vacuum cups 85, 90, provide the time delay, the cup 85 being carried on a stud 82 which is slidably supported in a bracket 84 and is attached to the lever 73, whereby the cups are brought into contact when the stop mechanism is operated. The cup 90 is supported on a bracket 87 and is provided with a central air passage controlled by a spring-loaded needle valve adjustable by a screw 106, whereby the amount of air passing to the cup 90 and therefore the time delay is adjusted. Specifications 602,046, 769,676, 769,677, 769,678 and 769,679 are referred to.